What is the principle of a Life Jacket?

What is the principle of a Life Jacket?
1). It provides oxygen to a drowning person
2). It increases the volume of the person to keep him afloat
3). It decreases the volume of the person to keep him afloat
4). The person can sit on It like a raft

Answer This Question with Explaination and Earn! Click Here to Know More!

---

Answer This Question
Name:
Email:
Answer :
Sum of (4+1)
Submit:

Other Questions

1. Question 10.1:Explain why(a) The blood pressure in humans is greater at the feet than at the brain(b) Atmospheric pressure at a height of about 6 km decreases to nearly half of its value at the sea level, though the height of the atmosphere is more than 100 km(c) Hydrostatic pressure is a scalar...

2. An atom with more neutrons than protons is called

3. A sphere rolls down on two inclined planes of different angles but same height, it does so

4. The wavelength of a wave is the distance between

5. Why two thin shirts can keep us warmer than a single thick shirt in winter

6. The force exerted on an object is 200 N and its mass is 100 kg. Find the acceleration of the object.

7. The hair of shaving brush clings together when removed from water due to

8. ?In a healthy human eye, the focusing?is done by the

9. Which set of conditions represents the easiest way to liquify a gas

10. Systems running more than one process concurrently are called ______________